Question

Correct pathway or passage of urine is
a. Renal cortex bladder $\rightarrow$ Medulla $\rightarrow$ Urinary bladder $\rightarrow$ Urethra
b. Renal vein $\rightarrow$ Urethra $\rightarrow$ Bladder $\rightarrow$ Ureter
c. Collecting duct $\rightarrow$ ureter $\rightarrow$ Bladder $\rightarrow$ Urethra
d. Pelvis $\rightarrow$ Medulla $\rightarrow$ Urinary bladder $\rightarrow$ Urethra

Answer 1

Urine is normally produced by the kidneys through the filtration of blood, while in the humans daily 200 to 800 ml of urine is produced in a person who is in healthy condition, and this may vary sometimes based on the fluid intake and as well as by kidney function.

Complete answer:
The first step in the urine formation is filtration where it is filtered from the blood, and daily each kidney is filtering the 1.25 liters of blood per minute.
The basic structural and functional unit of the kidney is the nephron, where this main function is the concentration of water and electrolytes, which is filtered from the blood, and the useful things are reabsorbed and waste products are expelled out.
The urinary system is regulated by the endocrine system, such as hormones, which include antidiuretic hormones, aldosterone, and parathyroid hormones.

When coming to the urination, which the process how urine is passed out of the bladder, the urine is formed first in the kidneys, where filtration takes places in the nephrons, and the final output of filtration, comes to the collecting duct $\rightarrow$ renal calyx $\rightarrow$ ureter $\rightarrow$ urinary bladder $\rightarrow$ urethra $\rightarrow$ urination( expelled outside).

Hence, the correct answer is option (C).

Note: In normal adults, the process of urination is a voluntary action, while in the case of infants, and some elderly people, it is an involuntary action, and the urination requires the physiological coordination of the central nervous system, somatic and autonomic system.